August is one of the cooler months of the year in Forbes, with average highs near 15.6°C and lows around 3.7°C (mean 9.7°C). It is about average for rainfall, averaging 48 mm of rainfall and 76% relative humidity across the period.
August is one of the cooler months of the year in Forbes. Across 45 years of records, the warmest August in Forbes was 1982 — when the month averaged 12.8°C — while the coldest were 1989 and 1990 at 7.6°C. Typical August days reach 15.6°C with nights near 3.7°C. The long-term trend is warming, about 0.3°C per decade.
August is about average for rainfall in Forbes, averaging 48 mm of rainfall. The wettest August on record was 1990 with 119 mm, while the driest was 1982 at 3 mm.
Relative humidity in Forbes during August averages 76%. The most humid August was 1990 at 89%, and the least humid was 1982 at 55%.
August receives about 3.6 kWh/m²/day of solar energy in Forbes. The sunniest Augusts were 2006, 2014 and 2019 at 4.1 kWh/m²/day, and the cloudiest were 1987, 1990 and 2022 at 3.1.
Average wind speed in Forbes during August is 2.3 m/s. The windiest August was 1990 at 2.8 m/s, while the calmest was 1982 at 1.7 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.4°C | 9.2°C | 9.8°C | 9.5°C | 10.7°C | +1.3°C |
| Avg High | 15.1°C | 15.0°C | 16.1°C | 15.6°C | 16.5°C | +1.4°C |
| Avg Low | 3.8°C | 3.3°C | 3.5°C | 3.4°C | 5.0°C | +1.2°C |
| Avg Rain | 61 mm | 64 mm | 41 mm | 34 mm | 38 mm | -22 mm |
August temperatures in Forbes have risen by about 1.6°C between 1981–1985 and 2021–2025.
August has ranged from a record low of -2.8°C (1994) to a record high of 27.4°C (1982).
Rainfall in August is about average for rainfall, averaging 48 mm, with a wettest year of 119 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.4°C per decade while lows rose 0.2°C per decade, widening the gap between day and night.
A quieter season to visit Forbes
If your dates are flexible, the more temperate months of March and December tend to be the most comfortable for visiting Forbes. That said, August — with days averaging 15.6°C and nights around 3.7°C (mean 9.7°C) and moderate rainfall (48 mm) — can still be rewarding for travellers who don't mind the cooler conditions, and often means fewer crowds.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 17.3°C | 11.0°C | 4.8°C | 23.9°C | 0.1°C | 12 mm | 73% | 2.3 m/s | 3.7 |
| 2024 | 18.7°C | 12.6°C | 6.6°C | 25.7°C | -0.1°C | 34 mm | 75% | 2 m/s | 3.6 |
| 2023 | 18.4°C | 12.2°C | 5.9°C | 23.5°C | 0.6°C | 18 mm | 72% | 1.9 m/s | 3.7 |
| 2022 | 15.3°C | 10.2°C | 5.1°C | 21.5°C | 1.1°C | 76 mm | 82% | 2.5 m/s | 3.1 |
| 2021 | 15.9°C | 10.0°C | 4.2°C | 23.1°C | 1.2°C | 29 mm | 77% | 2.4 m/s | 3.7 |
| 2020 | 13.6°C | 8.4°C | 3.2°C | 19.8°C | -2.0°C | 62 mm | 83% | 2.4 m/s | 3.5 |
| 2019 | 16.5°C | 9.6°C | 2.7°C | 24.8°C | -1.2°C | 6 mm | 63% | 2.4 m/s | 4.1 |
| 2018 | 16.4°C | 9.6°C | 2.8°C | 21.3°C | -0.2°C | 15 mm | 64% | 2.6 m/s | 3.7 |
| 2017 | 15.9°C | 9.3°C | 2.8°C | 21.3°C | -2.4°C | 21 mm | 66% | 2.5 m/s | 4 |
| 2016 | 15.6°C | 9.7°C | 3.9°C | 20.4°C | -0.4°C | 36 mm | 78% | 2 m/s | 3.5 |
| 2015 | 14.9°C | 9.2°C | 3.6°C | 23.8°C | -2.5°C | 41 mm | 80% | 2.1 m/s | 3.2 |
| 2014 | 15.7°C | 9.4°C | 3.2°C | 19.7°C | -2.3°C | 22 mm | 79% | 2 m/s | 4.1 |
| 2013 | 15.6°C | 9.8°C | 4.1°C | 23.8°C | -0.2°C | 28 mm | 77% | 2.3 m/s | 3.5 |
| 2012 | 14.7°C | 8.8°C | 2.9°C | 20.9°C | -1.0°C | 27 mm | 75% | 2.3 m/s | 3.8 |
| 2011 | 18.2°C | 11.8°C | 5.4°C | 23.5°C | 2.2°C | 61 mm | 72% | 2 m/s | 3.8 |
| 2010 | 12.8°C | 7.8°C | 2.8°C | 16.9°C | -1.3°C | 82 mm | 84% | 2.6 m/s | 3.3 |
| 2009 | 17.8°C | 11.2°C | 4.5°C | 26.3°C | 0.0°C | 5 mm | 67% | 2.4 m/s | 3.8 |
| 2008 | 13.7°C | 7.9°C | 2.1°C | 19.6°C | -2.0°C | 38 mm | 75% | 2.2 m/s | 3.3 |
| 2007 | 17.2°C | 10.9°C | 4.6°C | 24.6°C | -0.9°C | 22 mm | 76% | 2.3 m/s | 3.7 |
| 2006 | 17.5°C | 10.5°C | 3.5°C | 23.1°C | -1.4°C | 6 mm | 67% | 1.8 m/s | 4.1 |
| 2005 | 16.0°C | 9.5°C | 3.0°C | 20.7°C | -2.6°C | 30 mm | 74% | 2.5 m/s | 3.8 |
| 2004 | 15.5°C | 9.8°C | 4.1°C | 22.6°C | -0.5°C | 58 mm | 74% | 2.3 m/s | 3.4 |
| 2003 | 15.5°C | 9.4°C | 3.2°C | 19.7°C | -2.5°C | 88 mm | 76% | 2.5 m/s | 3.4 |
| 2002 | 18.2°C | 10.9°C | 3.6°C | 23.6°C | -0.4°C | 14 mm | 64% | 2.2 m/s | 3.9 |
| 2001 | 15.2°C | 9.0°C | 2.7°C | 21.1°C | -1.0°C | 49 mm | 74% | 2.6 m/s | 3.4 |
| 2000 | 14.5°C | 9.1°C | 3.7°C | 18.1°C | -1.0°C | 95 mm | 82% | 2.2 m/s | 3.4 |
| 1999 | 16.4°C | 10.0°C | 3.7°C | 21.8°C | -0.9°C | 78 mm | 75% | 2.1 m/s | 3.7 |
| 1998 | 15.7°C | 10.4°C | 5.1°C | 18.8°C | -1.9°C | 94 mm | 86% | 2.2 m/s | 3.5 |
| 1997 | 15.4°C | 8.9°C | 2.4°C | 21.7°C | -1.4°C | 36 mm | 72% | 2.2 m/s | 3.7 |
| 1996 | 14.2°C | 8.9°C | 3.6°C | 20.4°C | -2.0°C | 90 mm | 80% | 2.4 m/s | 3.4 |
| 1995 | 17.8°C | 11.0°C | 4.2°C | 25.4°C | -1.1°C | 8 mm | 76% | 2.1 m/s | 4 |
| 1994 | 15.7°C | 8.6°C | 1.4°C | 23.7°C | -2.8°C | 14 mm | 68% | 2 m/s | 4 |
| 1993 | 15.2°C | 9.5°C | 3.8°C | 20.7°C | -0.8°C | 32 mm | 82% | 2 m/s | 4 |
| 1992 | 14.3°C | 8.5°C | 2.7°C | 19.7°C | -2.6°C | 98 mm | 77% | 2.6 m/s | 3.5 |
| 1991 | 13.6°C | 8.2°C | 2.8°C | 19.4°C | -1.8°C | 73 mm | 80% | 2.7 m/s | 3.5 |
| 1990 🌧️ | 12.0°C | 7.6°C | 3.3°C | 18.0°C | -1.2°C | 119 mm | 89% | 2.8 m/s | 3.1 |
| 1989 ❄️ | 12.5°C | 7.6°C | 2.6°C | 17.6°C | -1.3°C | 49 mm | 85% | 2.3 m/s | 3.5 |
| 1988 | 15.9°C | 10.0°C | 4.0°C | 21.9°C | -1.1°C | 52 mm | 80% | 2.4 m/s | 3.7 |
| 1987 | 15.2°C | 10.2°C | 5.1°C | 18.9°C | 2.0°C | 90 mm | 82% | 2.2 m/s | 3.1 |
| 1986 | 14.8°C | 9.0°C | 3.2°C | 20.5°C | -1.0°C | 83 mm | 77% | 2.5 m/s | 3.8 |
| 1985 | 14.4°C | 9.1°C | 3.7°C | 18.8°C | -1.5°C | 104 mm | 79% | 2.4 m/s | 3.4 |
| 1984 | 14.1°C | 9.1°C | 4.0°C | 18.1°C | 1.7°C | 70 mm | 82% | 2.7 m/s | 3.3 |
| 1983 | 15.1°C | 9.5°C | 3.9°C | 19.2°C | -0.7°C | 54 mm | 81% | 2.3 m/s | — |
| 1982 🔥 | 20.5°C | 12.8°C | 5.2°C | 27.4°C | 1.0°C | 3 mm | 55% | 1.7 m/s | — |
| 1981 | 13.1°C | 7.7°C | 2.3°C | 16.9°C | -1.0°C | 41 mm | 82% | 2.7 m/s | — |
Actual recorded August data for each year, 1981–2025 — sourced from NASA POWER.
The average high in August is around 15.6°C with lows near 3.7°C (mean 9.7°C), based on 45 years of NASA POWER data.
August averages 48 mm of rainfall in Forbes, about average for rainfall. The wettest on record was 119 mm in 1990.
The hottest August reached 27.4°C in 1982. The coldest dipped to -2.8°C in 1994.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average August temperatures have risen by about 1.6°C. Daytime highs moved from 15.4°C to 17.1°C and overnight lows from 3.8°C to 5.3°C over the same span.
August is one of the cooler months of the year in Forbes and about average for rainfall, so plan for around 15.6°C daytime highs and 3.7°C at night.
Not quite — August is the 3rd coolest month in Forbes, averaging 9.7°C.
For August in Forbes, pack warm layers and a jacket for chilly mornings, with typical highs of 15.6°C and lows of 3.7°C.
Relative humidity in August averages 76% — quite humid.
Average wind speed in August is 2.3 m/s. The windiest August on record averaged 2.8 m/s (1990).
The wettest August on record was 1990 with 119 mm. On average, August sees 48 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Forbes behaves each August, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for August specifically, along with year-by-year records and how the month has changed over the decades.
